Marine CSEM methods for 3D hydrocarbon field mapping and monitoring

Abstract

PreviousNext No Access11th International Congress of the Brazilian Geophysical Society & EXPOGEF 2009, Salvador, Bahia, Brazil, 24-28 August 2009Marine CSEM methods for 3D hydrocarbon field mapping and monitoringAuthors: Jurgen J. ZachMichael A. FrenkelAnne-Marit Ostvedt-GhaziPatricia de LugaoDavid RidyardJurgen J. ZachEMGS AmericasSearch for more papers by this author, Michael A. FrenkelEMGS AmericasSearch for more papers by this author, Anne-Marit Ostvedt-GhaziEMGS AmericasSearch for more papers by this author, Patricia de LugaoEMGS AmericasSearch for more papers by this author, and David RidyardEMGS AmericasSearch for more papers by this authorhttps://doi.org/10.1190/sbgf2009-107 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract The marine Controlled-Source Electromagnetic (CSEM) method has become a well-established geophysical tool for 3D imaging of multiple resistive bodies. While traditionally considered an exploration tool, improved data quality and advanced processing methods put mapping the resistivity distribution within the field in reach, which we demonstrate using a recent survey example from the Norwegian Sea. The survey was acquired in a full 3D grid with state-of-the-art data acquisition standard, which permits advanced processing of full azimuthal data with both consistent phase and magnitude of the horizontal electric and magnetic fields. A resistivity image of a field was obtained using 3D inversion with fast turn-around time, based on approximate Hessian-based optimization and finite-difference time-domain modeling. Particularly in conjunction with 3D- and 4D-seismic technology defining the structural container, marine CSEM can add a complementary image of the bulk distribution of resistors. Using real data and supported by modeling, we assess the capability of CSEM technology for time-lapse monitoring, including the dominant sources of non-repeatability. Keywords: CSEM, 3D, acquisition, 4DPermalink: https://doi.org/10.1190/sbgf2009-107FiguresReferencesRelatedDetailsCited ByGeological Probability Of Success Assessment for Amplitude-Driven Prospects:A Nile Delta Case Study.Journal of Petroleum Science and Engineering, Vol. 6Instrumentation and Equipment1 April 2017 11th International Congress of the Brazilian Geophysical Society & EXPOGEF 2009, Salvador, Bahia, Brazil, 24-28 August 2009ISSN (online):2159-6832Copyright: 2009 Pages: 1997 publication data© 2009 Published in electronic format with permission by the Brazilian Geophysical SocietyPublisher:Society of Exploration Geophysicists HistoryPublished: 28 Apr 2014 CITATION INFORMATION Jurgen J. Zach, Michael A. Frenkel, Anne-Marit Ostvedt-Ghazi, Patricia de Lugao, and David Ridyard, (2009), "Marine CSEM methods for 3D hydrocarbon field mapping and monitoring," SEG Global Meeting Abstracts : 480-485. https://doi.org/10.1190/sbgf2009-107 Plain-Language Summary KeywordsCSEM3Dacquisition4DPDF DownloadLoading ...